Elevator safety mechanism.



Eb. 824,64 PATEJNTED JUNE 26, 1906.

G. HAIL. ELEVATOR SAFETY MECHANISM.

APPLIGATION FILED SEPT. 6, 1904.

3 SHEETS-SHEET 1.

N0- 82 4,646. 'PATENTED JUNE 26, 190131 G. HAIL.

ELEVATOR SAFETY MECHANISM- APPLICATION FILED SEPT.6, 1904.

s SHEETS-SHEET 2.

I Q fia e /7576 @1 M8245. 'PATENTED JUNE '26-, 1906.

G. HAIL.

ELEVATOR SAFETY MECHANISM APPLICATION FILED SEPT. 6, 1904.

3 SHEETSSHEBT 3.

. eEonennArL, or PROVIDENCE,RHODE ISLAND.-

ELvAro'R SAFETY mach- Amen Specification of Letters fateiit; V v

I Application filed September 6,1904; Serial No- 223,316.

To all whom it may concern.-

. Be it known that I, GEORGE HAIL, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Eleva- 7 tor Safety Mechanism, of which the following is a specification.

Th1s invention has relation to that class of elevator safety mechanisms in which provii' o sion is .made for preventing the starting 6f the car whilethe landing-door is open by I of this specification,

' cal sectional viewan electrically-operated 2 locking device in connection with an elevaif tor-car controller;

- the same in cross-section,

4o ventional controlled elevator and shows rasegmental ient source;

. and stopped.

looking or holding against movement the elevator-controller. 1

The object of the present invention is to provide a safety device of the character above mentionedwhich is particularly ada ed for locking the switch-handle or controller of an electric car-controller, but which. may likewise be utilized on elevators wherein an no .osc-illatoryhandle is employed in connection with a rope or cable. a

Referring to the drawings forming a part Figure 1 shows in verti- Fig." 2 shows aportion of Fig. 3 shows the *same parts in interlocked positlon; Fig. 4 is a pers ectiveview of the locking member.

1 30. Fig. 5 is a diagram of the electric system by which the device is operated. Fig. 6 represents in front elevation the controller and the. adjacent arts. Fig. -7 represents the 1 arm to which t e armature s attached.- Fig. v 35 8 re resents the counterweight.

T e same reference characters indicate the same parts-wherever they occur.

Referring first to Fig. 5, an elevator-car 10 and four landing-doors '11 are shown in conform.. The car 10 is provided 'th an oscillatory controlling-lever 12, by which the car is started in either direction The drawing illustrates the invention inconnection with anelectricallyelectric-contact-box 13, though the electric system of which the controller forms a art isnotillustrated, as it f orms no art 0 the present invention. The dGVlGQ or locking 50 the lever 12 actuated by a motor, Such-as *an electromagnet andis shown in shunt-circuit with an electrio lighting syste 14, located in the 'car 10,

m A, although the-current for said magnet maybe fromany convenseen that t The safety-circuit in which the" t- 14' is connectedin series comprises .ter 26, occupies the rim 2 ,circuit is closed. A lamp or resistance b is arranged in the safety-circuit and is located in the car. The switches 15 may be of any convenient form adapted to normally complete the circuit through them, but adapted to break the circuit when engaged by the doors 11, as shown by the three lower ones in Fig. 5. In this figure the door at which the Patented June 26, 1906. v

car stands is shown. 0 en and disengaged from theswitch '15. nder these conditions the switch completes the connection between the Wires 0 and a thus causing the energizing of the electromagnet- 14, with the result that the magnet effects the locking of the controlling-lever "12, as hereinafter described.

Referring now to Fig. 1, it will be seen that the magnet 14 is inclosed in a casing 16. Said casing is mounted on a bracket 17, secured to the supporting-post 18, on which the controller-box 13 is mounted. The bracket 17 is clamped to the post 18 by a U-bolt 19 and is vertically adjustable thereon, while the easing 16 isclampedto the bracket by a bolt 20, passing through a slot 21 in the bracket and into the bottom of the casing. The slot 21 provides for later'al adjustment of the casing fora purpose hereinafter mentioned. 1 22 1s the armatur'e of the magnet; is pivoted'toa lever 23 which is fulcrumed at squarely and whichfits eas yin a hole in the casing. Thus. when the armature 22 is lifted it swin s the lever23 about the fulcrum 24, with t e'result hereinafter specified.

Referringlnow to the controller, it will be -e operating-lever 12 is mounted to oscillate about its pivot 26in the controller-box 13' to operate 1Il stationary contacts in said box. The lever projects through a segmental slot 27 in the boxand has a rearwardly-projecting hooked finger 28 just outside the box. 29 is a seg mental rim secured to the upper edge of the box. Said rim has a flange or wall 30 at its rear edge and at each end a squared portion Agse ental. locking member. 32, the center of wdi searc is'coincident thecen- 9 and pivoted by Said armature.

24 to ears formed on the casing 16 and is held 1 uided vertically bya stem 25,

conjunction with ITO its ends to the squared portions 31 thereof. Said locking member has a flan e 33, which when the locking member is roc ed forward on its pivots, as shown by Fig. 3, en ages the hooked finger 28 on the controllingever 12.

A notch or blank-space 34 is formed in the flange 33 opposite the neutral or middle position. of the lever 12, so that when the lock ing member is rocked forward, as hereinafter explained, the hooked finger 28 is caught.

and locked in the notch 34. One end of the locking member has a rearwardly-projecting fin or 35, to which is pivoted a connectingrod 36. Said rod extends downwardly and through the top of the casing 16. The lower c 11d of the rod 36 has ascreW-thread, and it is adjustably screwed into an extension-piece 37, which is inside the casin 16 and is pivoted to the free end of theever 23. It is therefore evident that when the armature 22 is actuated by the magnet 14, as previously.

' stated, it lifts the two-piece connecting-re and so causes the locking member 32 to lock the lever 12; v

Since'the magnet 14 is energized only when the electrical circuit is completed, the controlling-lever is-movable only'whenall the doors are. closed. If it so happens that a door accidentally springs open or a short cirouiti occurs while the controlling-lever is at either extreme-of its movement, the locking member 32 is rocked forward until the flange 33 engages the finger 28. Then the next time the lever is swung to the neutral position the locking member snaps over the finger'28 and locks the lever until the trouble is remedied. j

To provide against accidental movement ofthe locking member and its connecting parts, the connecting-rod 36 is incased in a tube'38, whose ends are fastened in the casthe weight of the lever 23 and the connect-- ing-rod 36 37, and so to lessen the load on the magnet 1% Said device consists of a wei ht:

ed lever 40, pivoted at 41 to-ears on the ottom of the casin ver is bifurcated,

The longer end of said leas at 42, so that it may straddle and rise above the lower edge of the lever 23, and its sides bulge considerably, so

- as to give it additional weight; The shorter end of the lever 40 is forced by the longer end thereof upwardly against the lever 23,- thus exerting on it an influence which compen-' Sai provide for the travel of;

attempting to set forth all of the forms in which it maybe made or all of the modes of its use, I declare that what I claim is .1. .The combination with an elevator-car, and a controlling device com rising a box with a pivoted controller, of a ocking device for preventing the actuation of the controller, door-controlled means for actuating said locking device, and a protective guard for said locking device to prevent interference with the operation thereof.

2. The combination with an elevator-car and an oscillatory controller, of an electrical circuit, door-controlled switches in said circuit, a movable segmental locking member extending along the path of movement of said controller, .and an electromagnet on said car and in said circuit, and adapted to move said locking member to lock said controller.

3. The combination with an elevator-car and an oscillatory controller having a lateral projection, of an electrical circuit, door-controlled switches in said circuit, a movable segmental locking member extending along the path of movement of said projection on the controller, and an electromagnet on said car and in said circuit and adapted to move said locking member .to engage said p'rojection. I

4. The combination with an elevator-car and an oscillatory controller having a rojection, of a door-controlled locking mem er for locking said projection, and an arc-like guard 'inclosing said member, said guard having a segmental slot in-which said projection oscillates. v

a 5. The combination with an elevatorcar and a controller, of a locking device and doorcontrolled means for actuating said locking device to lock said controller, and guards or casings for said locking device and door-controlled means to protect them from external interference.

6. The combination with an elevator-car and an oscillatory controller,vof a movable l'ockin member for saidcontroller, a doorcontro led means for actuating said locking member, and means preventive of manual interference with said means and said locking member.

7. The combination with an elevator-car and an oscillatory controllin -lever, of a movable locking member for said lever, a doorcontrolled motor for actuating said'locking of manual interference with said motor, saidv locking member, and said connections.

8. The combination with an elevator-car, and an oscillatory controller, of an arc-like or segmental locking membenextendin alon the path of movement of said contro ler and pivoted at its ends to swing transversely of the plane of movement of said controller, and

automatic means rendered active by the opening of a door for yieldingly moving said menta or arc-like locking member pivoted at member into locking relation to said controller. 1

9. The combination with an elevator-car, and a controlling devicecomprising' a box havin a controller pivoted therein, of a segits ends to said box and movable transversely tothe path of movement of said lever, and automatic means connected to said member said contro er.

10. The combination with an elevator-car, and acontrollingl device comprising a support, and a box aving a-controller ivoted therein, of a segmental or arc-like ,ockincgi member pivoted at its endsto said box an movable transversely to the path of move-- ment of said lever, and door-controlled means adjustably attached to said support and connected to said member foractuating it to lock said controller.

' 1 1. The combination with an elevator-car, 3 5

and a controllin device comprising a standard, and a box aving a controller pivoted therein, of a segmental or arc-like ocking member pivoted at its ends to said box and movable transversely to the path ofmove- 4 o ment of said lever, a door-controlled magnet supported on said standard and having its armature operatively connected to said looking member to cause it to lock said controller.

12. An attachment for electric controlling 5 mechanisms for elevators, com rising 'a-segmental locking-bar adapted to 'e'pivoted atits ends to swing transversely to the controller, and having a laterally- 'rojecting finger, a casing having therein an e ectromagnet, an armature, and a ivoted lever, and connections between said finger and the free end of said pivoted lever, substantially as de- -v scribed.

In testimony whereof I have aflixed my signature in presence of two witnesses.

, GEORGE HAIL. Witnesses:

- HENRY A. GREENE,I

EDWARD L. HAIL. 

